Overheating

BCool · **Posted:** Mon Jul 24, 2006 12:49 pm

Has anyone had an issue with over heating? I have been experiencing really quick (60 seconds or less) increases (up to 7/8 on the guage) in engine temperature while giving it throttle up small hills and this is at 60 degree ambient temperature. I've had my water pump replaced already, could this be another water pump or maybe a problem with the viscous heater? It has never hit the red H but gets close. This problem seems to have just started, any experiences/ideas why this must be happening? I'd like to have some suggestions if the dealer says it "cannot duplicate the problem."

Cowcatcher · **Posted:** Mon Jul 24, 2006 12:56 pm

Does it actually seem like it is overheating or is it just the temp gauge you are seeing? The most obvious thing to me would be a bad temperature sensor. I would check that out first before assuming the worst.

vtdog · **Joined:** Fri Sep 30, 2005 11:27 am **Posts:** 640

I believe there was a tsb on bad temp gauges that required a reflash. I did not have that problem, but it was common on early models

BCool · **Posted:** Mon Jul 24, 2006 1:01 pm

Thanks, mine is a feb of 05 build so it is an early model, is there a way other than a defect guage to know if I'm running too hot?

DragonDiesel · **Posted:** Mon Jul 24, 2006 1:31 pm

Mine (05' CRD Sport) did the same thing towing a VW through the hills in Albuquerque, NM on the way up to the Four Corners area. Everytime I would start to go uphill it would go up to 7/8. First time I caught it, I freaked. Then I kept an eye on it. It was consistent. I would just have to back down. A real pride banger when semi's are passing you uphill and you know you can be going at least the speed limit.

When I got to Farmington, NM I came across a number of issues:

1.) Intake Filter was damp from the rain and had junk all over it. (1400 miles on that filter!)

2.) Torque Converter was going. She would buck, stall out, and shudder (not all at the same time).

3.) NONE of the TSB's had been performed by the previous owner, and they had replaced the transmission 3 months ago (I have owned it for a month now). :shock:

I would think that the clogged air filter would be enough to heat up a strained turbo. Hotter intake = hotter engine (in theory). That would be the first thing I would check.

oldnavy · **Posted:** Mon Jul 24, 2006 3:08 pm

DragonDiesel wrote:

Mine (05' CRD Sport) did the same thing towing a VW through the hills in Albuquerque, NM on the way up to the Four Corners area. Everytime I would start to go uphill it would go up to 7/8. First time I caught it, I freaked. Then I kept an eye on it. It was consistent. I would just have to back down. A real pride banger when semi's are passing you uphill and you know you can be going at least the speed limit.

When I got to Farmington, NM I came across a number of issues:

1.) Intake Filter was damp from the rain and had junk all over it. (1400 miles on that filter!)

2.) Torque Converter was going. She would buck, stall out, and shudder (not all at the same time).

3.) NONE of the TSB's had been performed by the previous owner, and they had replaced the transmission 3 months ago (I have owned it for a month now). :shock:

I would think that the clogged air filter would be enough to heat up a strained turbo. Hotter intake = hotter engine (in theory). That would be the first thing I would check.

Clogged filter would not cause what you describe. I bet the TSB for the Temp Gage was not done. The vehicles actually never overheated and the electronics need recalibration is the real problem.

richardkf · **Joined:** Wed Jun 14, 2006 4:15 pm **Posts:** 167

oldnavy wrote:

DragonDiesel wrote:

Mine (05' CRD Sport) did the same thing towing a VW through the hills in Albuquerque, NM on the way up to the Four Corners area. Everytime I would start to go uphill it would go up to 7/8. First time I caught it, I freaked. Then I kept an eye on it. It was consistent. I would just have to back down. A real pride banger when semi's are passing you uphill and you know you can be going at least the speed limit.

When I got to Farmington, NM I came across a number of issues:

1.) Intake Filter was damp from the rain and had junk all over it. (1400 miles on that filter!)

2.) Torque Converter was going. She would buck, stall out, and shudder (not all at the same time).

3.) NONE of the TSB's had been performed by the previous owner, and they had replaced the transmission 3 months ago (I have owned it for a month now). :shock:

I would think that the clogged air filter would be enough to heat up a strained turbo. Hotter intake = hotter engine (in theory). That would be the first thing I would check.

Clogged filter would not cause what you describe. I bet the TSB for the Temp Gage was not done. The vehicles actually never overheated and the electronics need recalibration is the real problem.

I believe the owners manual states that if your CRD is overheating, the a/c will automatically cut-out once the engine exceeds a certain temperature. So, if your temp guage is indicating that you are approaching an overheat condition, and you have not had the TSB done for the software that controls the guage cluster, you can play it safe and stop and let it idle in park with the blower set to the panel vents on hot and report the condition to your dealer when you return home with a request for the guage cluster software TSB to be done on your CRD.

oldnavy · **Posted:** Mon Jul 24, 2006 3:57 pm

richardkf wrote:

I believe the owners manual states that if your CRD is overheating, the a/c will automatically cut-out once the engine exceeds a certain temperature. So, if your temp guage is indicating that you are approaching an overheat condition, and you have not had the TSB done for the software that controls the guage cluster, you can play it safe and stop and let it idle in park with the blower set to the panel vents on hot and report the condition to your dealer when you return home with a request for the guage cluster software TSB to be done on your CRD.

Couple things I might not have made clear and that is the gage is not at fault, it is the programming in the computer that tells the gage where to set the gage needle and the engine is not actually over heating. Modern electronic's at work fellows, scary ain't it.

BCool · **Posted:** Mon Jul 24, 2006 4:38 pm

I'm taking it in today, I hope that is the problem and not another pump. It was over a 1200 mile trip that I noticed it, it heats up no mater what the outside temperature is, from 115 degrees, to 59 degrees. Starting in vegas to sacramento and back.

DragonDiesel · **Posted:** Mon Jul 24, 2006 5:23 pm

BCool - Is your A/C cutting out at all? Mine was not. I am inclined to agree with OldNavy on mine. It may just need the TSB. Is it doing it at idle as well?

OldNavy - Do you know what the TSB number is? Thanks for the info!

oldnavy · **Posted:** Mon Jul 24, 2006 5:29 pm

I didn't catch that you actually had a water pump replaced, what was the reason for that? Was it leaking or did the bearings go bad? This is looking like another one of the vehicles that a dealership lack of proper work has made things worse and may have actually cause problems.

This kind of problem was so bad in VW dealers that the TDI Forum members really banded together and start GTG's for repairs and eliminate dealer caused poor quality repairs and elimanate the way over pricing at the dealer also. I think that may be needed here, but not sure if we have enough people to do much like the VW guys do. That is unless they keep letting us go to their GTG's for work/training and general socializing.

oldnavy · **Posted:** Mon Jul 24, 2006 5:32 pm

Here is the full TSB. Sounds like BC may have been some other problem.

NUMBER: 08-043-05
GROUP: Electrical
DATE: August 11, 2005

THIS BULLETIN IS BEING PROVIDED IN ADVANCE. DO NOT PERFORM ANY
ACTIONS RELATED TO THIS BULLETIN UNTIL AUGUST 26, 2005. THE DRB III
SOFTWARE VERSION MUST BE AT LEVEL 62.2 TO PERFORM THIS BULLETIN. THE
DRB III SOFTWARE WILL BE AVAILABLE ON TechCONNECT BY AUGUST 26, 2005.
FOR MARKETS OUTSIDE OF THE UNITED STATES AND CANADA, THE DRB III
VERSION 62.2 SOFTWARE WILL BE AVAILABLE ON CINONConnect AND
TechCONNECT BY AUGUST 26, 2005. THE DRB III VERSION 62.2 SOFTWARE WILL
ALSO BE AVAILABLE ON THE ITIS DVD SEPTEMBER 2005 RELEASE.
SUBJECT:
Engine Temperature Gauge - Indicator Reads A Higher Temperature Than Actual
OVERVIEW:
This bulletin involves reprogramming the instrument cluster control (CCN)
module.
MODELS:
2005 (KJ) Liberty / Cherokee
NOTE: This bulletin applies to vehicles equipped with a 2.8L turbo diesel
engine
(sales code ENR).
SYMPTOM/CONDITION:
The customer may notice that the engine temperature gauge may indicate that
the engine temperature is high. In hot ambient temperatures, and under certain driving
conditions of extended uphill driving while towing a trailer, the engine temperature
indicator may indicate slightly above the 3/4 normal operating temperature mark on the temperature
gauge (but below the engine hot temperature markings). This condition may be caused by
an incorrect calibration of the of the engine temperature gauge.
New CCN module software corrects the old engine temperature gauge
calibration.
DIAGNOSIS:
If the engine and the cooling system are operating correctly, and the above
condition is
present, then perform the Repair Procedure.
SPECIAL TOOLS/EQUIPMENT REQUIRED:
CH6000A Scan Tool (DRBIII®)
NUMBER: 08-043-05
GROUP: Electrical
DATE: August 11, 2005
CH7000A/7001A J1962 Cable with red DRBIII® connector
REPAIR PROCEDURE:
NOTE: Before proceeding verify that the DRBIII® software version is at level
62.2.
1. Connect the DRBIII® to the vehicle Data Link Connector (DLC)
2. Turn the ignition switch to the "ON" position.
3. Using the DRBIII® scan tool recalibrate the instrument temperature gauge.
a. Select "DRBIII® Standalone"
b. Select "1998 - 2006 Diagnostics"
c. Select "All (Except Below)"
d. Select "Body Interior"
e. Select "Electro/Mech Cluster (MIC)"
f. Select "Miscellaneous"
g. Select "Recalibrate Temp Gauge" option.
4. If the recalibration of the instrument cluster was successful, the
DRBIII® will display
the following message: "Recalibration Successful".
5. If the version level of the original instrument cluster software allows
recalibration, but
the recalibration of the instrument cluster was NOT successful, then the
DRBIII® will
display one of the following messages: "Recalibration Failed" or "Write To
Memory
Address Failed". If one of these messages occurs repeat the above steps.
6. If the instrument cluster has already been recalibrated to the correct
software version
level, then the DRBIII® will display the following message: "Gauge Already
Recalibrated - Press Any Key to Exit".
7. The DRBIII® will display the following message if the original instrument
cluster
software version level is not the correct version level for recalibration:
"MIC Software
Version Incorrect - Press Any Key to Exit".
8. Verify that the instrument cluster engine temperature gauge has been
recalibrated by
selecting the "Recalibrate Temp Gauge" option again. The DRBIII® should
display the
following message: "Gauge Already Recalibrated - Press Any Key to Exit".
9. Turn the vehicle ignition switch to the "OFF" position
10. Disconnect the DRBIII® from the vehicle DLC.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation
No:
Description Amount
08-45-10-94 Reprogram Instrument Cluster Control (CCN)
Module - 2.8L Turbo Diesel Engine Only
0.2 Hrs.
FAILURE CODE:
AM Authorized Modification

DragonDiesel · **Posted:** Mon Jul 24, 2006 5:38 pm

Wow - thats a big TSB. THANKS!

You know, OldNavy, I put 85,000 miles on my 98 Jetta TDI in two years, and never got to go to one of those GTGs. I have been a member of TDIClub for over a year and a half too... I would love to do something like that for our CRDs. Maybe meet somewhere where we could all do a bit of offroad as well (since I never have!).

That TDI got sold to my bestfriend. 199K miles and everything was original on it save the tires, brakes, oil, and filters. It still runs like a champ too.

BCool · **Posted:** Mon Jul 24, 2006 5:41 pm

That TSB sounds identicle to what I was experiencing, no the A/C didn't cut out and I was pulling a small trailer up hills. I didn't let up when it kept getting hotter and it didn't ever get to the H. I think you got the ticket Old Navy, you solved another problem again I hope.

Funny you commented about service, I found a wrench in front of my grill about a week after they replaced the pump, it was just resting in a slot in the grill, and no I didn't take it back to them. That could have been a big problem had it got into the fan. My CRD was using coolant and then I opened the hood while it was running and there was sputtering and clanking coming from the water pump, bearings were shot. It took them like 14 days to fix that, I posted it on here before.

oldnavy · **Posted:** Mon Jul 24, 2006 5:51 pm

BCool wrote:

That TSB sounds identicle to what I was experiencing, no the A/C didn't cut out and I was pulling a small trailer up hills. I didn't let up when it kept getting hotter and it didn't ever get to the H. I think you got the ticket Old Navy, you solved another problem again I hope.

Funny you commented about service, I found a wrench in front of my grill about a week after they replaced the pump, it was just resting in a slot in the grill, and no I didn't take it back to them. That could have been a big problem had it got into the fan. My CRD was using coolant and then I opened the hood while it was running and there was sputtering and clanking coming from the water pump, bearings were shot. It took them like 14 days to fix that, I posted it on here before.

Ok, then I hope all works out for you on this.

I had a Nissan PU in to dealer for service before I made a 1100 mile trip back in the mid '80's and when I got to where I was going I went to check the oil and found a 3' long screwdriver laying accross the radiator support. Never took it back either, and used it on several ocassions over the years tightening belts and such till B-in-L borrowed it and never returned the thing. Got it back last week when we cleared out his garage after he passed away. :roll:

DragonDiesel · **Posted:** Mon Jul 24, 2006 5:55 pm

BCool wrote:

Funny you commented about service, I found a wrench in front of my grill about a week after they replaced the pump, it was just resting in a slot in the grill, and no I didn't take it back to them. That could have been a big problem had it got into the fan.

Yikes- Did it cause any kind of damage?

BCool · **Posted:** Mon Jul 24, 2006 5:59 pm

Not that I know of, it was wedged in there and I didn't find it till we went camping and somebody else noticed it. I was lucky it didn't pop loose.

Overheating

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